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A baseball has a velocity of 40.2 m/s (89.9 mi/h), directed horizontally, as it is released by a pitcher. The ball's velocity 0.0100 s before it is released is 38.1 m/s, directed 3.75° above the horizontal. Calculate the ball's instantaneous acceleration just before it is released. magnitude direction below the horizon?
A rifel with a barrel length of 63cm fires a bullet with a horizontal speed of 380m/s. How long does it take for the bullet to come to rest after entering the wood
An arrow is shot at 30.0 degrees above the horizontal. Its velocity is 49 m/s and it hits the target. What is the maximum height the arrow will attain
A metallic, spherical Christmas tree ornament has a diameter of 16.00 cm. find where will he see his reflection in the mirror
A block of ice weighs 100 N. You can lift the block vertically a distance of 2 m. You can also push the same block up a ramp that is 4 m long, What is the increase in the block's gravitational potential energy in each case
In a friction experiment, your wooden plank is horizontal. When a mass of 100 grams is hanging on the weight hanger of mass 50 grams, a slight push makes the block move at a constant speed along the plank. If the mass of a wooden block is 500 gram..
The head of a hammer with a mass of 1.5kg is allowed to fall onto a nail from a height of 0.70m, What is the maximum amount of work it could do on the nail
A 20 cm long organ pipe is filled with air and is open at one end and closed at the other. The velocity of sound in air at 0°C is 331 m/s. What is the wavelength of the fundamental frequency
If a 4 cm piece of insulation is added to the pine ceiling kpine = 0.120 J/msC kinsul = 0.042 J/msC If a 4 cm piece of insulation is added to the pine ceiling , find the interface temperature for the pine and insulation.
A 20cm radius centrifuge is spinning. If the test tube travels a distance of 50 meters around the centrifuge in 3 seconds, What is the period and frequency of the centrifuge
How many half-lives are required for the number of radioactive nuclei to decrease to 1/10^5 of the initial number
A textbook of mass 1.98kg rests on a frictionless, horizontal surface. A cord attached to the book passes over a pulley whose diameter is 0.160m , find the tension in the part of the cord attached to the book
what are some popular voltagecurrentresistance analogies? what are some ways you have learned about or will learn about
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